Import 316 Cast Stainless Steel Oil Port Caps Key — Buy in wholesale FOB from Supplier in China

The 316 Cast Stainless Steel Oil Port Caps Key from Wudi Zhibo Metals Co., Ltd. is a small marine hardware component produced by investment casting in AISI 316 stainless steel. The face plate measures 45mm by 21mm with a mounting hole centre distance of 29mm, designed as a universal replacement key for recessed deck fillers across boat, marine, and yacht applications. The 316 grade provides enhanced corrosion resistance through its molybdenum content, critical for saltwater environments where lesser grades would pit or fail. Surface finish is polishing, yielding a smooth, corrosion-resistant exterior that complements marine-grade hardware aesthetics.

Investment casting, also called lost-wax casting, permits complex geometries and thin sections with near-net-shape accuracy, reducing post-cast machining for this small component. The 316 alloy contains 16-18% chromium, 10-14% nickel, and 2-3% molybdenum, offering superior resistance to chloride-induced corrosion compared to 304 or 316L in certain conditions. The polishing operation removes casting scale and improves surface finish, though passivation may be advisable for maximum corrosion performance. Typical industry practice for marine castings includes solution annealing after casting to restore corrosion resistance affected by sensitisation during solidification; buyers should confirm whether this step is performed.

This key serves as a replacement tool for opening and closing oil port caps, deck fillers, and fuel/water tank access points on recreational and commercial vessels. The universal design aims to fit multiple filler brands, though dimensional compatibility should be verified against existing deck hardware. Buyers include boatyards, chandleries, marine equipment distributors, and individual vessel owners. The supplier lists a minimum order quantity of one piece and packages in bubble bags within cartons. Branding under 'Richwits' is noted on the source, though the relationship between this brand and the supplier should be clarified for warranty and traceability purposes.

Wudi Zhibo Metals Co., Ltd. is located at No. 161 Delixi Industrial Zone, Binzhou, Shandong Province, China. The supplier holds a 'harbor' trust tier classification with a 0.00% response rate and zero recorded average response hours, indicating no platform-documented communication history. The company profile as available does not state year of establishment, employee count, factory floor area, annual turnover, or registered capital. No export licence numbers, quality certifications, or membership in trade associations are listed in the source material.

The supplier operates under or alongside the 'Richwits' brand for marine hardware products, specifically for this deck filler key line. The product range visible from this listing focuses on small stainless steel 316 marine fittings produced by investment casting. The Shandong location suggests proximity to northern Chinese industrial zones with foundry and metalworking capabilities, though buyers should verify whether casting is performed in-house or subcontracted. No information on production capacity, inspection capabilities, or client references is provided in the available data. First-time buyers should conduct due diligence on company registration, factory audit status, and sample evaluation before committing to volume orders.